A search method employed by two or more people overlapping separate line searches forming a grid.
Not to sure tho hope this helps
Using a molecular<span>, scientists are able to estimate the amount of time that two species have been evolving independently.</span>lecular
Because as natural selection occurs and species mate and create offspring this leads to a change in DNA which can lead to new species or evolutionists versions of that species
Observation the action or process of observing something or someone carefully or in order to gain information:
When the surface water is heated by the sun it dissolves more salt i believe